Practice Determine Admixture Dosage (7.4.6) - High Performance Concrete

Practice: Determine Admixture Dosage

Lesson 7.4.6High Performance Concrete

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8 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is an admixture?
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Think about the additional materials we use in concrete.
Question 2.
Name a type of admixture that increases workability.
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Remember the substance that allows easier mixing?
3Question 3.
What is the primary purpose of determining admixture dosage?
- To enhance concrete durability
- To meet structural requirements
- To optimize workability
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Think about how an ideal concrete mix behaves during placement.
4Question 4.
Trial mixes help in evaluating the effects of admixture dosage on concrete properties. True or False?
- True
- False
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Recall the role of testing in achieving optimal concrete properties.
Question 5.
You are tasked with creating a mix for a project that requires high durability in a marine environment. The initial trials have resulted in low compressive strength. What adjustments would you recommend?
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Consider components that enhance structural integrity against harsh conditions.
Question 6.
If a trial mix with 1% superplasticizers resulted in an excessive slump, how might you troubleshoot and document the findings?
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Monitoring how each trial affects the mix is crucial.

4 more questions in this section. Enroll free to practise them all.